“Whoa! It’s like Spotify but for academic articles.”

Instant Access to Thousands of Journals for just $40/month

Try 2 weeks free now

Treatment of dilute soluble and colloidal wastewater using an anaerobic baffled reactor: influence of hydraulic retention time

The start-up and performance of four anaerobic baffled reactors (ABR, each of 10 l and eight compartments) treating a complex dilute soluble or colloidal wastewater (milk and colloidal rice and dog food — 500 mg COD/l) was studied. All four were started with a hydraulic retention time (HRT) of 80 h at 35°C and this was steadily reduced to 6 h; all the HRTs tested resulted in more than 80% COD removal. In one ABR an HRT as low as 1.3 h was tested over a period of 2 d and even at this high flow rate a COD removal of 40% was obtained. The production of soluble microbial products (SMP) was found to be greater in the reactors being fed colloidal material, possibly due to ‘differences’ in solubility and composition, and these were potentially refractory resulting in slightly lower COD removals than in the milk reactor. The biomass content of the reactors did not appear to influence SMP production, however, as HRTs were reduced, more SMPs were produced. Anaerobic bioassays were used to evaluate the activity of the biomass on the different wastewaters and their biodegradability. It was found that the initial activity on both the soluble and colloidal wastewater were of the same order of magnitude and hence solid hydrolysis was not limiting the rate or extent of degradation. Residence time distribution studies were carried out to monitor the effect of system characteristics such as HRT, solids content and feed composition on the hydrodynamic flow characteristics and dead space in each ABR. Little difference in mixing or dead space was observed under the different conditions tested. The average dead space measured was 20–37% and the flow pattern within the reactors showed an intermediate behaviour between plug–flow and ideally mixed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Water Research Elsevier
Loading next page...

You’re reading a free preview. Subscribe to read the entire article.

DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy unlimited access and
personalized recommendations from
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $40/month

Try 2 weeks free now

Explore the DeepDyve Library

How DeepDyve Works

Spend time researching, not time worrying you’re buying articles that might not be useful.

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from Springer, Elsevier, Nature, IEEE, Wiley-Blackwell and more.

All the latest content is available, no embargo periods.

See the journals in your area

Simple and Affordable Pricing

14-day free trial. Cancel anytime, with a 30-day money-back guarantee.

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches


Best Deal — 25% off

Annual Plan

  • All the features of the Professional Plan, but for 25% off!
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.

billed annually